Updated October 2026

Internists in Orange, CA

Internal medicine
Orange, California

Internists: 213
Linked to a hospital or group: 193
Hospitals with an internist: 34
Medical groups with an internist: 89
Practice at a hospital: 170

There are 213 internists in Orange. UCI Health Physicians has the most, 40, and UCI Health - Orange has the most affiliated internists, 123. 21% finished medical school 30 or more years ago.

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Orange internists, listed A to Z by last name

Each internist on the list has internal medicine as their primary specialty and an Orange practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.

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Orange internists, A to Z
Internist	Hospitals	Medical groups	Email and phone
Sonja Abbassi, MDNPI 1225426851	2 hospitals	4 groups	Contacts
Aladean Abdrabbo, MDNPI 1578905675	1 hospital	1 group	Contacts
Parinaz Abiri, MDNPI 1376122416	1 hospital	1 group	Contacts
Garima Agrawal, MDNPI 1962933499	1 hospital	1 group	Contacts
Rasha Ahmed, DONPI 1932631793	2 hospitals	3 groups	Contacts
Uzma H. Ahmed, MDNPI 1699185611	1 hospital	-	Contacts
Shangida Ahsan, MDNPI 1639638463	3 hospitals	2 groups	Contacts
Amirtha Ajit, MDNPI 1881688422	1 hospital	1 group	Contacts
Talal Al-AssilNPI 1528819141	1 hospital	-	Contacts
Athena Theresa Alexander, MDNPI 1225417322	-	1 group	Contacts
Edwin R. Alexander, MDNPI 1659315752	3 hospitals	-	Contacts
Saif Al Yaseen, MDNPI 1356684096	1 hospital	3 groups	Contacts
Mohammed Waseem Uddin Ansari, MDNPI 1952744948	2 hospitals	2 groups	Contacts
Carlos A. ArguedasNPI 1023075579	2 hospitals	-	Contacts
Aram Asatrian, MD, PhDNPI 1053989293	1 hospital	1 group	Contacts
Brian J. BecerraNPI 1497287619	2 hospitals	2 groups	Contacts
Rosine Bekarian, DONPI 1487159489	2 hospitals	4 groups	Contacts
Jasbir Singh Bhaika, MDNPI 1255837530	2 hospitals	1 group	Contacts
Mariam Nessiem Zaki Bishara, MD, PhDNPI 1497931950	1 hospital	-	Contacts
Charles Sanders Blumberg, MDNPI 1225532310	4 hospitals	2 groups	Contacts
Almaz Borjoev, MDNPI 1518454339	1 hospital	-	Contacts
Ahsan Zahid ButtNPI 1043893647	1 hospital	1 group	Contacts
John F. Cabrera, MDNPI 1952970188	2 hospitals	1 group	Contacts
David L. Capaccio, DONPI 1457355364	3 hospitals	5 groups	Contacts
Elizabeth C. Chao, MDNPI 1700179157	1 hospital	1 group	Contacts
Sweta Chekuri, MDNPI 1841584273	3 hospitals	3 groups	Contacts
Lauren Lae Chen, MDNPI 1861029001	1 hospital	1 group	Contacts
David Lawrence Cheung, MDNPI 1104402973	1 hospital	1 group	Contacts
Ruby Chien, MDNPI 1417650227	1 hospital	1 group	Contacts
Elizabeth Youngae Cho, MD, MPHNPI 1669900221	1 hospital	2 groups	Contacts
Laura M. Cho, MDNPI 1982790820	-	-	Contacts
Ranu Choudhary, MDNPI 1386664183	5 hospitals	2 groups	Contacts
Ralph W. Cygan, MDNPI 1942219704	-	-	Contacts
Ronald N. Daoud, MDNPI 1093732992	2 hospitals	1 group	Contacts
Meghan Erica Dekitani, MDNPI 1790348779	3 hospitals	1 group	Contacts
Michael Anthony Del JuncoNPI 1679063127	2 hospitals	1 group	Contacts
Shubham Dixit, DONPI 1932785367	1 hospital	1 group	Contacts
Jacqueline Thanhhuyen Do, MDNPI 1689646952	-	-	Contacts
Johnny Nguyen Do, MDNPI 1235371675	1 hospital	3 groups	Contacts
Tam Dan Do, MDNPI 1134540719	2 hospitals	2 groups	Contacts
Meena Marie Dopp, MDNPI 1710447925	-	3 groups	Contacts
Jeffrey G. Dyo, MDNPI 1538663158	2 hospitals	2 groups	Contacts
Sami Edris, MDNPI 1285194530	2 hospitals	2 groups	Contacts
Roderick Boado Eguilos, DONPI 1194393694	1 hospital	1 group	Contacts
Nadia Elihu, MDNPI 1659340156	1 hospital	1 group	Contacts
Jonathan Evans, MDNPI 1811458417	1 hospital	1 group	Contacts
Leanne Zabala Farestveit, MDNPI 1902369028	-	-	Contacts
Doralice Neves Ferreira, DONPI 1578068516	1 hospital	2 groups	Contacts
Mario S. Ficarola, MDNPI 1104939529	-	2 groups	Contacts
Christine FungNPI 1306474127	2 hospitals	4 groups	Contacts

Showing 1 to 10 of 201 Orange internists

The list shows the 201 internists with a public profile. The other 12 are counted in the total and searchable with a free account.

Sources: NPPES NPI Registry (CMS) and Dmand AI Affiliation Data

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Dmand AI has the EHR for 190 of 213 Orange internists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.

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UCI Health Physicians has the most internists in Orange, with 40

UCI Health is second with 38, and St. Jude Heritage Medical Group third with 25. Counts are internists with a California address linked to each group.

Medical groups with the most internists in Orange
#	Medical group	Parent organization	Internists
1	UCI Health PhysiciansOrange	Parent on file	40
2	UCI HealthOrange	Parent on file	38
3	St. Jude Heritage Medical GroupBrea	Parent on file	25
4	Optum - Downtown Los AngelesLos Angeles	Parent on file	18
5	Regents Of The University Of CaliforniaOrange	Parent on file	12
6	Chest and Critical Care ConsultantsAnaheim	-	11
7	Southern California Permanente Medical GroupPasaden	Parent on file	9
8	Inpatient Specialist of California PCSan Bernardino	Parent on file	6
9	OptumCare Medical GroupLos Alamitos	Parent on file	5
10	Harbor-UCLA Medical CenterTorrance	Parent on file	4

Top 10 of 89 Orange medical groups with an internist

Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data

UCI Health - Orange has the most affiliated internists in Orange, with 123

Providence St. Joseph Hospital Orange is second with 49, and Hoag Hospital Newport Beach third with 26. Orange internists are affiliated with 34 hospitals in all.

Hospitals with the most internists in Orange
#	Hospital	Health system	Internists
1	UCI Health - OrangeOrange	UC Irvine	123
2	Providence St. Joseph Hospital OrangeOrange	Providence	49
3	Hoag Hospital Newport BeachNewport Beach	Hoag Memorial Hospital Presbyterian	26
4	Providence St. Jude Medical CenterFullerton	Providence	9
5	Providence Mission HospitalMission Viejo	Providence	6
6	Long Beach Medical CenterLong Beach	MemorialCare Health System	5
7	MemorialCare Saddleback Medical CenterLaguna Hills	MemorialCare Health System	5
8	Arrowhead Regional Medical CenterColton	San Bernardino County	3
9	Orange Coast Medical CenterFountain Valley	MemorialCare Health System	3
10	UCLA Santa Monica Medical CenterSanta Monica	University of California Health	2

Top 10 of 34 Orange hospitals with an affiliated internistAll 5 Orange hospitals

See every hospital and group for each Orange internist

Each public profile names one place an internist practices. A free account shows all of them, with the employer, the EHR and validated contacts.

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Source: Dmand AI Affiliation Data

Most Orange internists practice at a hospital: 170 of the 190 with a mapped site

88 also practice at a medical group site, and 39 at home health agencies. An internist can practice at several kinds of site, so the shares overlap.

Orange internists by site of care

Hospitals17089%
Medical group practices8846%
Home health agencies3921%
Physician offices179%
Hospices126%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

21% of Orange internists finished medical school 30 or more years ago

33 of the 158 Orange internists with a graduation year on file. 55 graduated in the last 10 years.

Physicians by years since medical school

Under 10 years ago5535%
10 to 19 years ago5032%
20 to 29 years ago2013%
30 to 39 years ago1711%
40 or more years ago1610%

Source: Dmand AI Professional Profile Data

Every Orange internist profile shows current hospitals and groups, Medicare activity and NPI details

Primary practiceThe main place they practice, with its type and cityOn every profile
Every site of careEach hospital, clinic and group where they practice nowWith a free account
EmployerThe organization they work for, when one is on fileWith a free account
Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
EHR in useThe EHR at each site where they practiceWith a free account
Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account

Free account: 30 days free, self-serve, no credit card.

Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data

Sources for the Orange internist directory

Sources for the data on this page
Data on this page	Source
HCPs, types and specialties	NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Sites of care, hospitals and medical groups	Dmand AI Affiliation Data
Medical school graduation year	Dmand AI Professional Profile Data

Data last refreshed October 2026Report an inaccuracy Remove my information

Internists are HCPs whose primary specialty is internal medicine (taxonomy code 207R00000X), with an active NPI and an Orange practice address.

FAQ

Frequently asked questions about internists in Orange

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many internists are in Orange?

213 internists have an active NPI, an Orange practice address and internal medicine (taxonomy code 207R00000X) as their primary specialty. 193 of them are linked to a hospital or medical group.

Which Orange medical groups have the most internists?

UCI Health Physicians, with 40, followed by UCI Health with 38 and St. Jude Heritage Medical Group with 25.

Which Orange hospitals have the most internists?

UCI Health - Orange, with 123 affiliated internists, followed by Providence St. Joseph Hospital Orange with 49 and Hoag Hospital Newport Beach with 26.

What share of Orange internists practice at a hospital?

170 of the 190 Orange internists with a mapped site of care, or 89%, have a current hospital affiliation.

What is the taxonomy code for internal medicine?

207R00000X is the NPPES taxonomy code for internal medicine. Sub-specialties with their own code are counted on their own lists.

How can I contact internists in Orange?

Dmand AI finds validated work emails, mobile numbers and practice phone numbers for internists in Orange through healthcare waterfall enrichment, matched to the site where each one practices now. They are available with a free Dmand AI account: 30 days free, self-serve, no credit card.

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